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In this paper we discuss the application of Volterra series in the process of morphing of real ground motion accelerograms into ones that are spectrum compatible. The aims are, firstly that the morphed accelerogram should have a response spectrum that is very near to the target spectrum. Secondly, it should be very similar to the original seed accelerogram; specifically it should have a similar general envelope, with main pulses and peaks in similar temporal locations in the timeseries. Thus, the morphed record should visually and qualitatively appear like a real accelerogram. Thirdly the morphed record should allow for reasonably stable numerical integration so that the ground velocity and displacement timeseries can be obtained. Additionally we provide a Matlab toolbox (GUI) which implements this Reweighted Volterra Series Algorithm (RVSA)

Tags: SECED 2015  
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